Osimhen is undoubtedly a top star and it is safe to say that he will leave his current club to join another club in Europe but €130 million is too much for him. He may be a very good player but no club in Europe will spend 130 million euros to sign him right now. If Napoli agree to release him from 100 million to less than 100 million, maybe his change of club will be faster. A player like Harry Kane signed to Bayern Munich for €110 million plus, no club would buy him for €130 million. He can be transferred for a maximum of 110 million euros, but he may not be transferred for more than that.
He used to be a very good player but his performance has dropped and I can't imagine that any club would be willing to pay >100 million € for him. A sum under 100 million € seems more likely to me and if Napoli want to sell him then they will have to lower the price a bit. It would be a big surprise for me if someone would buy him at the current price.
If it was a year ago, there might still be clubs willing to sign Osimhen for that price because at that time Osimhen did have an impressive performance (scored 31 goals during the 22/23 season). But for now, it looks like no one will want to sign Osimhen at €130 million because his performance has dropped quite drastically. Even his poor performance was once thought to be the cause of Napoli's defeat to Barcelona in the Champions League, thus making Napoli eliminated from the competition.